A new type of flooded chiller

Abstract

The utility model discloses a novel flooded type water chiller relates to water chiller technical field, aims at solving because evaporator cylinder internal space increases, and the refrigerant filling volume will increase accordingly, and the refrigerant filling is more, will make the compressor suction liquid in system, greatly refrigeration system stability problem, its technical scheme main points are including condenser body, the condenser body upper end fixedly connected with the flash tank body, the flash tank body upper end fixedly connected with the air supplementing pipe, the air supplementing pipe away from the one side fixed connection of flash tank body has the compressor body, the compressor body both ends respectively fixedly connected with compressor exhaust pipe and compressor suction pipe, the one side fixed connection of compressor suction pipe away from compressor body has evaporator body, evaporator body one end fixedly connected with the throttle pipe group. Reached the effect that the oil-rich area is more easily formed at the bottom of evaporator, and the oil return is easier.

Description

Technical Field

[0001] This utility model relates to the technical field of chiller units, and in particular to a novel flooded chiller unit. Background Technology

[0002] Currently, in the field of industrial refrigeration, heating and air conditioning, the traditional evaporator types used in air conditioners include: dry evaporator, flooded evaporator and falling film evaporator. Among them, the commonly used flooded evaporator type is the circular cross-section evaporator, which has a circular body, heat exchange tubes arranged at the bottom of the body, and a gas phase space at the top.

[0003] The existing technical solutions mentioned above have the following drawbacks: if the heat exchange tubes are arranged too high, the gas phase space will be insufficient or the gas phase distance will be insufficient, resulting in liquid carryover in the unit's suction gas. In order to ensure that the heat exchange tubes are arranged at a low position at the bottom and that sufficient gas phase space is reserved at the top, a larger cylinder must be used. A larger cylinder means increased cost, increased evaporator volume and floor space. At the same time, due to the increased internal space of the evaporator cylinder, the amount of refrigerant charged will also increase accordingly. A larger refrigerant charge will result in more compressor oil in the evaporator, which will greatly affect the heat exchange efficiency of the heat exchanger. Utility Model Content

[0004] The purpose of this invention is to provide a novel flooded chiller unit that increases the heat exchange efficiency of the heat exchanger.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A novel flooded chiller unit includes a condenser body, a flash tank body fixedly connected to the upper end of the condenser body, a gas supply pipe fixedly connected to the upper end of the flash tank body, a compressor body fixedly connected to the side of the gas supply pipe away from the flash tank body, a compressor discharge pipe and a compressor suction pipe fixedly connected to both ends of the compressor body, the compressor discharge pipe being interconnected with the condenser body, an evaporator body fixedly connected to the side of the compressor suction pipe away from the compressor body, a throttling pipe assembly fixedly connected to one end of the evaporator body, and the end of the throttling pipe assembly away from the evaporator body being interconnected with the flash tank.

[0007] Furthermore, a filter screen is fixedly connected inside the flash tank, and a liquid supply pipe is fixedly connected to the outside of the flash tank. The condenser body is connected to the flash tank through the liquid supply pipe.

[0008] Furthermore, a refrigeration chamber is provided inside the evaporator body, a heat exchange tube is fixedly connected inside the refrigeration chamber, a liquid distribution plate is fixedly connected inside the refrigeration chamber, the liquid distribution plate is located below the heat exchange tube, and the cross-section of the refrigeration chamber is an oblong shape.

[0009] Furthermore, the bottom of the refrigeration chamber is filled with liquid refrigerant, the top of the refrigeration chamber is filled with gas refrigerant, and the heat exchange tubes are evenly distributed inside the refrigeration chamber.

[0010] Furthermore, an electrical control cabinet is fixedly connected to the upper end of the condenser body, and a system balance regulating pipe is provided between the evaporator body and the condenser body.

[0011] Furthermore, a suction and exhaust balance pipe for adjusting suction and exhaust balance is provided between the compressor exhaust pipe and the compressor suction pipe.

[0012] In summary, the beneficial technical effects of this utility model are as follows:

[0013] 1. The evaporator of this unit has an elongated oval cross-section. This design allows for a higher gas phase space at the top of the cylinder, providing sufficient vaporization and separation distance for the gas-liquid mixture after evaporation. This ensures that the vaporized gas entering the compressor is a single gas without refrigerant liquid, thus guaranteeing a liquid-free compressor and extending its lifespan. Structurally, the unit is more compact, suitable not only for small-scale units but also for large-scale units, saving materials.

[0014] 2. Because the overall volume of the evaporator in this unit is smaller than that of a traditional evaporator, the amount of refrigerant charged is greatly reduced. In terms of performance, the liquid evaporation space at the bottom of this evaporator is relatively smaller than that of a traditional air conditioner, making it easier to form an oil-rich zone at the bottom of the evaporator and making oil return easier.

[0015] 3. Compared with traditional evaporators, this unit has a longer top gas phase space distance, which allows sufficient space and time for the liquid droplets carried out by the gas during the evaporation process to vaporize and absorb the heat carried out by the liquid. This results in a higher superheat at the top compared to traditional air conditioners, which is more conducive to improving the overall energy efficiency of the unit. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a top view of the structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the internal structure of the flash tank of this utility model;

[0019] Figure 4 This is a schematic diagram of the internal structure of the evaporator body of this utility model.

[0020] In the diagram, 1. Condenser body; 2. Flash tank body; 3. Make-up gas pipe; 4. Compressor body; 5. Compressor discharge pipe; 6. Compressor suction pipe; 7. Evaporator body; 8. Throttling pipe assembly; 9. Electrical control cabinet; 10. System balance regulating pipe; 22. Filter screen; 23. Liquid supply pipe; 51. Suction and discharge balance pipe; 71. Refrigeration cavity; 72. Heat exchanger tube; 74. Liquid distribution plate; 75. Refrigerant liquid; 76. Refrigerant gas. Detailed Implementation

[0021] The present invention will be further described in detail below with reference to the accompanying drawings.

[0022] Reference Figure 1 A novel flooded chiller unit includes a condenser body 1, a flash tank 2 fixedly connected to the upper end of the condenser body 1, a gas supply pipe 3 fixedly connected to the upper end of the flash tank 2, a compressor body 4 fixedly connected to the side of the gas supply pipe 3 away from the flash tank 2, a compressor discharge pipe 5 and a compressor suction pipe 6 fixedly connected to both ends of the compressor body 4 respectively, the compressor discharge pipe 5 being interconnected with the condenser body 1, and an evaporator body 7 fixedly connected to the side of the compressor suction pipe 6 away from the compressor body 4, a throttling pipe assembly 8 fixedly connected to one end of the evaporator body 7, the end of the throttling pipe assembly 8 being interconnected with the flash tank 2, the evaporator body 7 having an elongated oval cross-section, the purpose of which is to reserve a relatively high gas phase space at the top of the cylinder, so that the gas-liquid mixture after evaporation has sufficient vaporization distance and gas-liquid separation distance, so that the gas vaporized from the evaporator enters the compressor as a single gas without refrigerant liquid, thereby ensuring that the compressor is liquid-free and increasing the compressor's service life.

[0023] Reference Figure 3 The flash tank 2 is fixedly connected to the inside of the flash tank 2 and the liquid supply pipe 23 is fixedly connected to the outside of the flash tank 2. The condenser body 1 is connected to the flash tank 2 through the liquid supply pipe 23. The top has increased the gas phase space and gas phase distance, and the filter screen 22 has been added, so it is not easy to form gas replenishment liquid.

[0024] Reference Figure 4 The evaporator body 7 has a refrigeration chamber 71 inside, and heat exchange tubes 72 are fixedly connected inside the refrigeration chamber 71. A liquid distribution plate 74 is also fixedly connected inside the refrigeration chamber 71 and is located below the heat exchange tubes 72. The cross-section of the refrigeration chamber 71 is an oblong shape, allowing the heat exchange tubes 72 to fully contact the refrigerant liquid 75, facilitating rapid heat exchange. The bottom of the refrigeration chamber 71 is filled with refrigerant liquid 75, and the upper part of the refrigeration chamber 71 is filled with refrigerant gas 76. The heat exchange tubes 72 are evenly distributed inside the refrigeration chamber 71, enabling rapid heat exchange between the refrigerant gas 76 and the refrigerant liquid 75, thus increasing the overall heat exchange effect.

[0025] Reference Figure 2An electrical control cabinet 9 is fixedly connected to the upper end of the condenser body 1. A system balance adjustment pipe 10 is provided between the evaporator body 7 and the condenser body 1 to facilitate overall balance adjustment. A suction and exhaust balance adjustment pipe 51 is provided between the compressor exhaust pipe 5 and the compressor suction pipe 6 to facilitate overall suction and exhaust balance adjustment.

[0026] The implementation principle of this embodiment is as follows: First, the cross-section of the refrigeration chamber 71 inside the flash tank 2 is oblong. The purpose is to reserve a higher gas phase space at the top of the cylinder, so that the gas-liquid mixture after evaporation has sufficient vaporization distance and gas-liquid separation distance. This ensures that the gas entering the compressor from the evaporator is a single gas without refrigerant liquid, thus ensuring that the compressor is liquid-free and increasing the service life of the compressor body 4. Compared with traditional evaporators, the longer gas phase space at the top allows sufficient space and time for the liquid droplets carried out by the gas during the evaporation process to vaporize and absorb the heat of the liquid. This results in a higher superheat at the top compared to traditional air conditioners, which is more conducive to improving the energy efficiency of the whole unit. At the same time, the addition of a filter screen 22 inside the flash tank 2 makes it less likely for liquid to be carried in during gas replenishment, ensuring stable operation of the whole unit.

[0027] The embodiments described herein are preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape, and principle of this utility model should be included within the scope of protection of this utility model.

Claims

1. A novel flooded water chiller unit, comprising a condenser body (1), characterized in that: The upper end of the condenser body (1) is fixedly connected to the flash tank body (2), the upper end of the flash tank body (2) is fixedly connected to the gas supply pipe (3), the side of the gas supply pipe (3) away from the flash tank body (2) is fixedly connected to the compressor body (4), the two ends of the compressor body (4) are respectively fixedly connected to the compressor exhaust pipe (5) and the compressor suction pipe (6), the compressor exhaust pipe (5) is interconnected with the condenser body (1), the side of the compressor suction pipe (6) away from the compressor body (4) is fixedly connected to the evaporator body (7), one end of the evaporator body (7) is fixedly connected to the throttling pipe group (8), the end of the throttling pipe group (8) away from the evaporator body (7) is interconnected with the flash tank body (2).

2. The novel flooded chiller unit according to claim 1, characterized in that: A filter screen (22) is fixedly connected inside the flash tank (2), and a liquid supply pipe (23) is fixedly connected to the outside of the flash tank (2). The condenser body (1) is connected to the flash tank (2) through the liquid supply pipe (23).

3. The novel flooded chiller unit according to claim 1, characterized in that: The evaporator body (7) has a refrigeration chamber (71) inside, a heat exchange tube (72) is fixedly connected inside the refrigeration chamber (71), a liquid distribution plate (74) is fixedly connected inside the refrigeration chamber (71), the liquid distribution plate (74) is located below the heat exchange tube (72), and the cross-section of the refrigeration chamber (71) is a waist-shaped hole.

4. The novel flooded chiller unit according to claim 3, characterized in that: The bottom of the refrigeration chamber (71) is filled with refrigerant liquid (75), the top of the refrigeration chamber (71) is filled with refrigerant gas (76), and the heat exchange tubes (72) are evenly distributed inside the refrigeration chamber (71).

5. The novel flooded chiller unit according to claim 1, characterized in that: An electrical control cabinet (9) is fixedly connected to the upper end of the condenser body (1), and a system balance regulating pipe (10) is provided between the evaporator body (7) and the condenser body (1).

6. The novel flooded chiller unit according to claim 1, characterized in that: A suction and exhaust balance pipe (51) for adjusting suction and exhaust balance is provided between the compressor exhaust pipe (5) and the compressor suction pipe (6).

Images